Regarding the 15% difference in male/female performance: there are of course different ways of measuring physical performance, but from what I have seen 15% is way off the mark. The study carried out in the late 90s to determine whether females should be allowed to serve in infantry roles included the stat that you need to get a 99th percentile female to get the same physical performance as a 50th percentile male. Perhaps this is why the RAFFT scores are so different.